I'm not sure if you have to install it first from the main Xbox menu, but if you do, then do that first. Then in the BB main menu, go to Options > Game Options > Announcer Voice (I think? I don't remember exactly what it is called, but you'll see the voice actor's name plus the voice type A or B)
You will most likely want Kana Ueda Type B over Type A. All the Type A voices sound like super bad Engrish